Centrifugal liquid-separator.



No. 825,412. PATENTED JULY 10, 1906. E. O. PAWLEY.

GENTRIFUGAL LIQUID SEPARATOR.

APPLICATION FILED OUT. 31, 1905.

2 SHEETS-SHEET 1.

, PATENTED JULY 10. 1906. E. C. PAWLEY.

CENTRIPUGAL LIQUID SEPARATOR, APPLIGATION FILED 00T.31,1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

ERNEST C. PAWLEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO SMITH MANUFACTURINGCOMPANY, OF CHICAGO. ILLINOIS, A CORPO- RATION OF ILLINOIS.

Specification of Letters Patent.

Patented July 10, 1906.

Application filed OCtOlJSl 31,1905- Serial No. 285,314.

To all whom it may concern: Be it known that I, ERNEST O. PAWLEY, acitizen of the United States, residing at Chicage, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin a Centrifugal Liquid-Separator, of which the following is aspecification.

i My invention relates to centrifugallyacting separators for segregatinthe constituent ingredients of li uid bodies om each other, and I willdescri e it as applied to the separation of impurities from milkaccompanied with the segregation of cream.

The principal objects of my new construction are to render the o erationof separating the cream from the mill more efficient and to facilitatecleaning of the a paratus, so that it shall not become foul and conveybacteria to subsequent charges. To this end I make the parts separableand arrange them in apeculiar way, as hereinafter described.

Other features of the invention will be developedin this specificationand embraced in the claims. r

In the drawings, Figure 1 is a side eleva tion showing the exterior ofthe bowl and part of the spindle. Fig. 2 is a central sectionalelevation through the bowl and operative elements. Fig. 3 is a bottomIan view of the bottom plate of the bowl, and Flg. 4 is a top plan viewof the same. Fig. 5 is an elevation, partly in section, of thecirculating apparatus. Fig. 6 is an elevation of the apparatus depictedin Fig. 5, but at right angles thereto. Fig. 7 is a bottom plan view ofsaid circulating apparatus, showing the lugs or ribs whereby it issupported in the bowl with space beneath for the skimmed milk to flow.Fig. 8 is a top plan view of the circulatory apparatus, including one ofthe centrifugal separating-disks Fig. 9 is one of the centrifugal disksin top plan view and detached. Fig. 10 is a detail showing analternative way of separating the parts, and Fi 11 is a modification ofthe collecting-cham er.

Referring now to the drawings, the reference-numeral 1 indicates'thebowl, and 2 is the s )indle as usual in this class of machines. Theottom of the bowl has ducts 3 to conduct the skimmed milk away and alsoa socket 4 to receive a locking-pin 5, projecting from the circulatoryapparatus bottom 6 ,-the

latter being supported on lugs or ribs 7 to give a collecting-spacebeneath. The circulatory apparatus consists of a solid stem 7, havingits upper end hollow or formed intoa tube or receptacle 8, into whichthe milk is introduced, and a series of conoidal centrifugialdisks 9,mounted thereon, the bottom isk of which may be, but not necessarily, asolid casting with the bottom 6 on the stem 7, as shown. The bottomcasting 6 fitsinto a socket 10, but is stopped by the lugs 7, so as toleave a space for the collection of the skimmed milk, which is drainedinto a suitable receptacle by the aforesaid ducts 3 through the bottomplate of the bowl.

From near the top of the receptacle 8, in the upper end of the stem orrod 7*, throu h which the milk is introduced, lead'paralIel tubes 14,having small perforations, one or more, on their outer sides, (indicatedat 15,) to each centrifugal disk,.through which the milk is sprayed'onsaid disks. On the inner side of the tubes are enlarged perforations 16,through which in the descent of the milk the lighter particles or creamcorpuscles escape to be drawn up alongside the rod or stem 7 and tubularportion or receptacle 8 thereof, as will be presently ex lained. Thetubes 14 meet together at the ottom 17 to allow of the introduction of aflexible brush 'or swab for cleaning whenever the circulatory apparatus.is lifted out of the bowl. They may be united rigidly to the receptacle8 of the rod or stem 7 or to the sleeve 18, which slips over saidreceptacle and connects with ports 19 therein. These pipes or tubes aredivided in their len th at 20, but so as to make a close fit, and can belifted bodily oil' in order to be swabbed out with their sleeve andcleaned; but the pipes 14 may be permanently attached to the centralstem, as shown in Fig. 2, and the u per part of said stem maderemovable, incl pipes, as indicatedin Fig. 10, so that the swab may beintroduced through the apex of the tubes, the latter being unbroken intheir length and the entire circulatory apparatus being bodilyremovable'from' the bow uding ports 21 for said ICO The centrifugaldisks are formed, as usual, 7

with suitable means for spacing. They have scallops 22 to fit over thepipes 14 and a keyway 23 to engagea feather or spline 24 on the centralstem or standard to prevent displacethrough crown-cap 27 of the bowskimmed milk through pipes ment. In respect to these I claim nothingnew.

In order to obtain more perfect se aration of the li uid, a number ofconoidal isks are employe so constructed as to leave a space betweeneach layer of disks, onto'which, as already stated, the -milk in itsdescent is sprayed through openings '15, thereby dividing the liquid orfurnishing each of the. disks with their separate uota and more quicklysegregating the lig ter liquids from the heavier.

In operation, assumin fresh milk to be the liquid which is separate itis led into the receptacleB and thence -to pipes 14, and from thesepipes in its descent the main portion is sprayed over the centrifugaldisks, while some of the cream escapes through the inner erfdrations 16,the remainder of the cream eing collected in the space between the disksand central stem 7, together with that first taken, anddrawn up toeduction-pi e '26 l the going 01f, as before explained, I 3, leadingfrom the bottom ate.

From the foregoing and by reference to the drawings it will be readilyunderstood and clearly seen'that as the milk is introduced into thereceptacle 0r tubular part 8 on the I upper end of the solid stem or rod7 it will be conducted therefrom through the pipes or tubes 14, whichcommunicate at their upper ends with said receptacle, and as it passesdown throughfsaid pipes or-tuhes it will be sprayed 'onto the d sks 9and inwardly to-' the rod or stem 7 a the central openings war invthedisks 9 being considerably largerthan f the diameter of the rod 7, thusformin an annular space around said rod through .w ich the cream maypass upwardly and out skimmedmilk will be through the eduction-pipe 26,while the rained throughthe ducts 3 in the bottom of the bowl. By thusarrangin the outlet-pipes for the cream and skimme milkthat 1s, the pipefor the cream being located in the upper portion of the machine and theoutlet-pipes for a the.

I skimmed milk in the bottom or lower portion thereof-it is evident thata' more thorough and effective separation is attained.

Having thus fully described my invention,

what I claim as new, and desire tosecure by stem having a receptacleinits upper portion for the introduction of milk, spra g-pipes fed fromthereceptacle and exten ing downwardly alongside said stem and havingsmall spraying-apertures on their outer sides-and larger apertures ontheir inner sides.

' ;3- ..I.n ,a, centrifugal sep g apparatus the combination-with thebowl, of a central stem having a receptacle in its upper portion for theintroduction of milk, spraying-pipes fed from the receptacle andextending downwardly alongside said stem, and colloidal disks detachablymounted on the sprayingpipes and surrounding said stem at a distancetherefrom.

4,. In a centrifugal separatin apparatus, the combination with the bowlaving-inits upper portion an outlet for the cream audits bottom outletsfor the milk,.of a central stem having a receptacle in its upper ortionand a' conoidalbasei at its otheren ,sprayin p pes andsurrounding thecentral'stem at a distance therefrom.

ERNEST C. PAWLEY: Witnesses:

OHLAs'C. TILLMAN, CHAS. E, GORTON.

pi es communicating at their upper en s 'with said receptacle andextending down: '85.

